/* ==========================================================================
   LAYOUT — estructura de página, no apariencia de componentes.
   ========================================================================== */

.container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

@media (min-width: 768px) {
  .container { --gutter: 32px; }
}

@media (min-width: 1024px) {
  .container { --gutter: 40px; }
}

main {
  display: block;
}

section {
  padding-block: var(--space-16);
}

@media (min-width: 1024px) {
  section { padding-block: var(--space-24); }
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-10);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  border-bottom: var(--border-hairline);
  transition: padding-block var(--dur-base) var(--ease-soberano),
              box-shadow var(--dur-base) var(--ease-soberano);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
  transition: padding-block var(--dur-base) var(--ease-soberano);
}

.site-header.is-compact .container {
  padding-block: calc(var(--space-4) - 8px);
}

.site-header.is-compact {
  box-shadow: 0 8px 24px -20px rgba(26,22,20,0.4);
}

.site-nav {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .site-nav { display: flex; }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-20) var(--space-16);
  background:
    radial-gradient(120% 90% at 14% 0%, color-mix(in srgb, var(--gold) 14%, transparent), transparent 60%),
    var(--paper);
}

@media (min-width: 1024px) {
  .hero { padding-block: var(--space-32) var(--space-24); min-height: 92dvh; display: flex; align-items: center; }
}

.hero .container {
  display: grid;
  gap: var(--space-10);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero .container {
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--space-12);
  }
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-visual {
  position: relative;
  order: -1;
}

@media (min-width: 1024px) {
  .hero-visual { order: 0; }
}

.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-8);
  align-items: center;
  margin-top: var(--space-10);
}

/* ---------- Pilares ---------- */

.pillars-grid {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .pillars-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-10); }
}

/* ---------- Cómo funciona ---------- */

.timeline {
  display: grid;
  gap: var(--space-8);
  counter-reset: paso;
}

@media (min-width: 1024px) {
  .timeline { grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
}

/* ---------- Catálogo ---------- */

.catalog-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.catalog-toprow {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
}

@media (min-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
}

/* ---------- Líneas ---------- */

.lines-stack {
  display: grid;
  gap: var(--space-4);
}

/* ---------- Banda logística ---------- */

.logistics-band {
  background: var(--void);
  color: var(--paper);
}

.logistics-band .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .logistics-band .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.logistics-block {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

/* ---------- FAQ ---------- */

.faq-list {
  max-width: 760px;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--void);
  color: var(--paper);
  padding-block: var(--space-10);
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .site-footer .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-legal {
  max-width: 56ch;
  color: color-mix(in srgb, var(--paper) 60%, transparent);
  font-size: var(--fs-small);
  line-height: 1.6;
}

/* ---------- Bottom nav (mobile) ---------- */

.bottom-nav {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: var(--z-bottomnav);
  display: flex;
  background: var(--paper);
  border-top: var(--border-hairline);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (min-width: 768px) {
  .bottom-nav { display: none; }
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 56px;
  position: relative;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.bottom-nav__item.is-active {
  color: var(--seal);
}

body.has-bottom-nav {
  padding-bottom: calc(56px + env(safe-area-inset-bottom, 0px));
}

@media (min-width: 768px) {
  body.has-bottom-nav { padding-bottom: 0; }
}

/* ---------- FAB ---------- */

.fab-whatsapp {
  position: fixed;
  right: var(--space-5);
  bottom: calc(var(--space-5) + 72px);
  z-index: var(--z-fab);
}

@media (min-width: 768px) {
  .fab-whatsapp { bottom: var(--space-6); }
}

/* ---------- Utilidades de layout ---------- */

.stack-sm > * + * { margin-top: var(--space-3); }
.stack-md > * + * { margin-top: var(--space-5); }
.stack-lg > * + * { margin-top: var(--space-8); }

.only-mobile { display: block; }
.only-desktop { display: none; }

@media (min-width: 1024px) {
  .only-mobile { display: none; }
  .only-desktop { display: block; }
}